Enumeration Interface

Enumeration Interface -
    Enumeration interface used for retrieve the elements one by one from collection.
    It makes a read only copy of objects and puts in enumeration. You can retrieve elements only.
    Enumeration interface has two methods only.

boolean hasMoreElements() -
         This method is used to ensure that enumeration has elements or not. It return true if enumeration has elements otherwise return false.

E nextElement() -
    This method is used for retrieve the elements from enumeration. It throws NoSuchElementException if there is no element in enumeration.

There are some classes which implements enumeration Interface.
1.StringTokenizer